Service difficulty report · Structure · Piper PA42720

Difficulty date
August 7, 2006
Submitted
August 8, 2006
Operation
General aviation
Filed by
RX8R084N
Amentum Services Inc
Aircraft
N9085U
Make and model
Piper PA42720
Aircraft serial
425501034
Aircraft time
5,726 hours, 3,736 cycles
Engine
Pwa PT6A61
Engine time
5,606 hours, 3,107 cycles
Propeller
Hartzl HCB3TN3
Part
Structure
Part number
4579411AND12
Condition
Cracked
Location
Nlg Door
Part time
5,726 hours, 3,736 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FOUND CRACK IN LT NOSE LANDING GEAR DOOR ON RADIUS OF FRONT STIFFENER SECTION. ALSO FOUND CRACK IN RT NOSE LANDING GEAR DOOR AT FORWARD HINGE ATTACH POINT. HAVE PREVIOUSLY FOUND CRACKS IN THE NOSE LANDING GEAR DOORS ON 4 OTHER PA-42'S. THE CRACKS ARE USUALLY IN THE DOOR HINGE ATTACH AREA. WE BELIEVE THE CRACKS ARE BEING CAUSED BY IN FLIGHT TURBULENCE, CAUSING THE DOORS TO VIBRATE IN FLIGHT.

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